Well - dropped it off - at least 2 weeks, so gain stuck at home with no coffee :-[ Not sure from looking at it whether its an engineering issue that might pop up on others, the guys I driopped it off at were a pretty grumpy lot so I doubt I'll get any gems from them to share here. Basically, the first time it happened it was dramas as we couldn't shut the steam off. In the lead-up to this happening, the knob got noticeably looser. It lasted about a week before popping again, then each time we have pushed it back, it has popped off sooner. If I could have fixed it here, I would have, believe me, I do not like being left at home without coffee, it sucks. It kinda makes sense to have some sort of spare around when you think about the extra $70/week we spend when it's not here. Hope we get it back soon, I thought being on the bleeding edge might have some downside, I hope that this is the last for a while.